Hollande and Germany chancellor Angela Merkel are understood to have talked climate in their initial telephone calls with Trump. Other leaders – perhaps apart from Russia’s Vladimir Putin, she jokes – could do so too.

In Marrakech China, Saudi Arabia, France, Germany and the High Ambition Coalition of the EU and world’s poorest and most climate vulnerable countries are among those to have reiterated their commitment to the deal.

“You saw already some countries have come out like the High Ambition Coalition – they are working to get more countries… business are preparing statements – but the majority of this exercise has to be done by next week,” she says.

Business leaders are on her hit list in the next 24 hours – she mentions Unilever CEO Paul Polman as one vocal climate champion – to open up a channel of communication to Trump.

“It’s a little early but they have a role. You see in the US press a number of sectors are organising the message,” she says.

“We need next week in part many of these networks and we will have start discussion on what is the good response and who is offering that.

“The most important thing is to get views from heads of state and government hopefully from next week.”

“Many countries were a little sceptical about this call or declaration that the Moroccan presidency has in mind, but now I think everyone they agree it will be important to have this this strong political movement, so I hope this unfolds.”

What’s vital – she argues – is that next week the 190+ countries at the UN send a “simple” but resounding message to the world that they stand by the Paris Agreement.

What’s also clear, Tubiana admits, is that the age of a US administration offering leadership on this issue is drawing to a close for at least four years.

That terrifies many veteran observers of these negotiations, aware of the myriad blocks and traps George W Bush’s negotiating team laid from 2000 to 2008.

Eyes hidden by black Raybans, Tubiana claims she sees instead a “fantastic moment” for the world. “There will be no more US leadership and we have to find one by ourselves .”